Deck Building Cost in St. Louis, MO
In St. Louis, MO, deck building costs about $8,840 for a 300 sq ft deck, with most jobs from $3,720 to $18,600. That is 7% below the national typical price of $9,500.
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Deck Building price range in St. Louis
| Low | Typical | High | |
|---|---|---|---|
| Price in St. Louis | $3,720 | $8,840 | $18,600 |
| US national price | $4,000 | $9,500 | $20,000 |
| Difference | -$280 | -$660 | -$1,400 |
Labor is usually the biggest part of the bill, and rates in St. Louis depend on local demand. Local cost index used: 0.93 (1.00 is the US average).
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What affects the price in St. Louis
- House or job size
- Material and quality grade
- Local labor rates
- Permits and inspections
The price covers a 300 sq ft deck. Typical project time is 3 to 10 days. Expected life: 15 to 30 years.
How to get a fair price in St. Louis
- Collect at least three written quotes from licensed and insured Missouri contractors.
- Ask for the price split into labor, materials and permits.
- Check licenses with the Missouri state licensing board.
- Pay in stages tied to finished work, not all up front.
Frequently asked questions
How much does deck building cost in St. Louis?
About $8,840, with a typical range of $3,720 to $18,600 for a 300 sq ft deck.
Is deck building more expensive in St. Louis than average?
It is 7% below the national typical price.
Does the price include permits?
Sometimes. Ask your contractor whether permits, disposal and cleanup are in the quote.
Sources and method
- Bureau of Economic Analysis: regional price parities
- U.S. Bureau of Labor Statistics: Occupational Outlook Handbook
- Prices are modelled estimates, not quotes
Page last updated November 2026. See our editorial policy and disclaimer.